Hello Victor,

thanks for the explanation. Then I misinterpreted the documentation at https://www.postfix.org/postconf.5.html#append_dot_mydomain.

My simple (already chosen solution) for /etc/postfix/aliases is

# Person who should get root's mail. Don't receive mail as root!
root: kl...@tachtler.net

Thanks for the quick reply and clarification.


Regards
Klaus.

On 1/11/25 09:19, Viktor Dukhovni via Postfix-users wrote:
On Sat, Jan 11, 2025 at 08:16:37AM +0100, Klaus Tachtler via Postfix-users 
wrote:

I have set the following configuration in /etc/postfix/main.cf:
append_at_myorigin = no

Best to not do that.

If I now create an e-mail locally via (Postfix) sendmail, which is also
stored locally under /var/spool/main/klaus.

My expectation would be that a rewrite to kl...@mydomain.tld takes place -
here kl...@tachtler.net - but there is a rewrite to kl...@mx1.tachtler.net

There's no reason to expect that.  The only related setting is
"append_dot_mydomain" which appends the domain to non-fqdn hostnames,
there's nothing that appends to the domain to bare localpart addresses.
For that:

     # Leave default:
     # append_at_myorigin = yes
     myorigin = $mydomain

# postconf -nx myhostname
myhostname = mx1.tachtler.net

myorigin defaults $myhostname.

# postconf -dx append_dot_mydomain
append_dot_mydomain = yes

The default is not relevant here, and has changed in more recent Postfix
versions and compatibility levels.



--

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e-Mail  : kl...@tachtler.net
Homepage: https://www.tachtler.net
DokuWiki: https://dokuwiki.tachtler.net
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